Car-bolster.



No. 887,210. PATENTED MAY-12, 1908.

' c. METTBRHAUSBN.

CAR BOLSTBR.' 4 APPLICATION FILED NOV. 22, 1907.

Ition of the draw-bar, and convex, substan- CARL METTERHAUSEN, OFCHICAGO, ILLINOIS.

cAR-BoLsTER.

Specification of Letters Patent.

latented May 12, 1908.

Application led November 22, 1907. Serial No. 403,256.

To all whom it may concern.'

Be it known that I, CARL METTERHAUSEN, I a citizen of the United States,residing at l Chicago, in the countyvof Cook and State of Illinois, haveinvented certainnew and useful Im roveinents in Car-Bol'sters, of whichthe fol owing is a specification.

One of the objects of this invention is the provision of a car bolsterthat shall embody in itself means for the attachment thereto of i thedraft rigging.

Another object is to ada t a car bolster for the attachment thereto ofdraw-bars of various types.

The invention will be more fully understood by reference to theaccompanying drawings, in which Figure 1 is a top plan view of a carbolster and draft rigging embodying the features of my invention. Fig. 2is a vertical section on dotted line 2 2 of Fig. 1. Fig.' 3 is a sectionon dotted line 3 3 of Fig. 1.

In the illustrative embodiment herein shown of my invention, the carbolster consists of an integral casting, but it will be understood thatit may be built u from pressed steel parts or structural iron s iapes,or constructed of a combination of .castings and pressed or rolledmembers. The'central portion of the bolster is formed to provide acasing 2, said casing having an opening extend ing horizontallytherethrough for the receptially-semicircular surfaces 4 at oppositeends of said openiiig. Centrally of its lower side the bolster isprovided with a pivot boss 5 adapted to be seated in a socket 6 upon thetruck bolster A. The king pin 7 extends through the body bolster and thetruck bolster, passing centrally through the casing 2.

The draw-bar 8 may be of any common or approved construction. As hereinshown it comprises two substantially parallel rods 9 extending throughthe longitudinal opening 3 of the casing 2 on opposite sides of the kingpin, and carrying means for'taking up the shock of pulling and pushingstresses. Said means comprises a coiled spring 1() interposed betweenone side of the casing 2 and a relatively fixed point upon the rear endsof said rods. A collar 11 having a, concave surface 12 is slidablymounted upon the convex surfaces 4 of the casing 2, and supports one endof said spring. The vopposite end of the spring bears upon a collar 13loosely .mounted upon the rods 9 and adjustably secured thereon by meansof the nuts 14. Between the other side of the casing 2 and a collar 15immovable upon the rods 9 is a coiled spring 16, said spring bearing atone end upon a collar 17 similar to the collar l1. The tension of thesprings 10 and 16 may be regulated by means of the nuts 14.

The opening 3 in the casing 2 is of sufIicient width and height topermit of pivotal movement of the draw-bar S in horizontal and verticalplanes. During suoli movements the collars 11 and 17 slide upon theconvex surfaces 4 of the casing 2. A larger or smaller amplitude ofvertical oscillation of the draw-bar may be provided for b v prop erlvpi'oportioning the size of the opening 3 and the size of the rods 9.

The opening 3 is herein shown as having straight parallel side walls,but said walls may be made to approach each other at their middle pointsor take any other suitable form as considerations of strength may dic#tate.

While I have herein shown a `draw-bar ivotally and yieldingly connectedwith the iolster 1, it will be understood that a drawbar may be directlypivoted upon the king pin 7 for radial movement, or may be mounted fornon-pivotal, yielding movement in the opening 3, or may be rigidlyattached to the bolster. s

It will beseen that the self-contained bolster and draw-bar-attachingmeans is very com act and renders it possible to carry the oar ody loweron its trucks than could be done by the use of the ordinary body bolsterand separate iii'eans for connecting the draft rigging thereto.

I claim as my invention:

1. A car bolster havirgan opening therethrough and a convex surface ateach end of said opening; a draw-bar extending through said opening;members on said draw-bar in' sliding contact with said convex surfaces;and springs bearing against said members and relatively fixed points insaid draw-bar.

2. A car bolster having an opening therethrough for the reception of adrawfbar; a

l5 ing a longitlldinal opemng therethrough and Witnesses:

convex hearing surfaceat eoh end of said ing therethrough for thereception of a drawopening and a pivot stud upon the lower 1 bar and aconvex bearing surface at each end s1de of said bolster. ofsaid opening.

3. A ca'r bolster comprising a casing hav- CARL METTERHAUSEN.

convex surfaces at each end of' saidopening. -LUTHER L. MILLER,

4. An integral car bolster having an open- C. P. PARKER.

